Slotting and scoring device



2 Sheets-Sheet 1 N. L. HURD SLOTTING AND SCORING DEVICE ori inai Filed April 25. 1923 Feb; 3, 1925.

Feb. 3, 1925.

N. L. HURD SLQTTING AND SCORING DEVICE Originai- Fil ed April 23- 1923 cots-Sheet 2 Patented Feb. 3, 1925.

UbtiT A r 'i'? 9 F PM:

NATHANIEL L. HURD, 1 CHICAGO, ILLINOIs ASSlQ NQBwTQ,SAMUEL Lane-e ron- COMPANY, or CAMDEN, NEW JERSEY, A, ooaroaarron on NEW JERSEY;

SLOTTINGYAND- SCORING DEVICE:

Application fi1ed.Apri1.23,: 1923; Serial No. 633,866. Renewed December 16,- 1924.

To allurhom itmay concern lie it known that I, NA'ri-iaiainn L. HU-nn, acitizen of. the United. States residing at @hicago, inthe county ofz cook and State f Illinois, have invented; certain new and i'i'sefuli Improvements in slotting and: Scoring Devices, of which the following is. a.

This invention relates to devicefon sloti-J ting and scoringmaterial such, for. example,

as box-board for the manufacture. of corrugated boxes.

One object of the invention is to-provide simple, reliable and eflicientmeans for slotting and scoringbox-board material and which requires a minimumnumber of ad- 3' ustments and assures accurate results.

in combined slotting and scoring heads it has been proposed-to provide one head ofeach pair with a. pair of slotting; blades spaced apart to a distance equal to the length of the box for which the blank is to be formed; and mount between these blade-s a scoring member. The blades are usually made adjustable toward and from each other circumferentially of the head tofacilitate the forming of blanks for boxes of different lengths, and this necessitates the provision of a different length of scoring member for eachboX length.

One object of my invention is: to so construct and mount the scoring member that a single member will serve for all box lengths and may have its effeotive-lengthvaried to adapt it to any desired spacing of the slotting; blades.

In carrying out my invention-I employ a flexible or articulated scoring-member, and so design the head that a portion of said member'may bestoredor mounted in inoperative position within the head, and may be drawn out into operative position on the periphery of the head to thereby vary the length of the effective or operating portion.

Sucha flexible or articulated scoring member is disclosed and broadlyclaimed;

and one form-is specifically claimed-in my copendingapplication Serial No. 720,924., filed June 19, 1924, while in the present application I claim the combined slotting and scoring construction and also claim a different'form of scoring member;

In the accompanying drawings I have shown certain embodiments of my. invention which are. to be considered inan illustrative rat-herthan limiting sense as variousnchanges. may be made within the scope of my inventionand defined in the appended claims.

In these drawings Figure-.1 is a side elevation of -a machine which is ordinarily used forslotting and scoring box-board Figure 2'is a fragmentaryfront elevation ofi? the same;

Figure 31 is aside elevation ofa pair of cooperating combined slotting and scoring members embodying my invention;

Figure at is a sectional view ofthe same taken in the plane of line et-l of Figure 3.;

Figure 5 is a fragmentary sectional view taken in the plane of line 55 of- F igure 3;

Figure 6 is a fragmentar 1 side elevation ofanother pair of cooperating members embodying my invention and adapted to score material alonglines which are offset with respect to each other;

Figure 7 is a diagrannnatic view of a completed box blank, the transverse slotting and scoringof which is done by means of the cooperating members shown in Figures 3', 4 and 5;

Figure 8 is a fragmentary end View of oneof the heads shown in Figure 6 and showing the stationary scoring members in offset relationship to make offset scores shown in Figure 9'; and,

Figure 9- is a. diagrammatic view of a completed box blank showing scoring-along longitudinal lines which are offset with respect to each other for facilitating folding and sealing of the flaps for avoiding strain at the corners; oif'the box.

The various novel features of the invention will be apparent from thefollowing description and drawings and will be particularly pointed out in the appended claims.

Referring first to Figures land 2 of the drawings, it Willbe notedthat thereis shown a machine which, ordinarily is used for? slotting and scoring corrugated box -board for the manufacture of corrugated boxes. W ith IL/111$ machine the slotting is. done. by pairs of cooperating revolving. members or heads'lO and 11 mounted, respectively, upon driven shafts 12 and13. One member 10 of each set 1s provided wlth, a segmental knife 14: which registers With a corresponding groove 15 in the associated member 11. In this same machine the scoring is done by sets of scoring wheels, each set including a scoring wheel or head 16 and a cooperating scoring wheel or head 17 having peripheral formations for accomplishing the desired result. These scoring wheels 16 and 17, respectively, are mounted on other shafts 18 and 19, respectively.

It will be appreciated that a single machine is used for slotting and scoring blanks to be made up into boxes of various sizes. In order to change the adjustment of this machine for slotting and scoring blanks for one size of box to another, it is necessary, with the type of machine shown in Figures 1 and 2, to adjust three sets of slotting heads and three sets of scoring wheels, and in view of the fact that the slotting heads and scoring wheels are not on the same shafts, it very often happens that the scores 20, as shown, for example, in Figure 7, are not in line with the associated slots 21.

In order to decrease the number of adjustments necessary and to insure the proper location of the score with respect to slots, and generally to improve devices of this nature, the slotting and scoring members are combined in single cooperating units. This may be accomplished, for example, by means of the arrangement shown in Figures 3, 4 and 5 wherein there are disclosed two cooperating slotting members 22 and 23 also embodying scoring means. These members 22 and 23 are secured to shafts 24 and 25, respectively. The head 22 is provided with a curved or arcuate shaped slotting knife 26, which is fixed within the head and cooperates with a slotting groove 27 in head 23 for performing aslotting operation. As shown in Figure 7 the slots 21 lying along the same line, are spaced from each other a predetermined amount. In a blank for a different sized box, the slots along the same line may be spaced a different amount. Accordingly, another slotting knife 28 mounted in the head 22 is made circnmferentially adjustable within said head so that the distance between the ends 29 and 30 of the slot ting knives 26 and 28 may be varied in accordance with requirements. The head 23 is provided with another groove 31 for cooperatively receiving the slotting knife 28.

Instead of having the scoring means in a different set of heads, I have provided an arrangement whereby the scoring members may be mounted in the same heads 22 and 23. In view of the fact that the distance between the slots 21 in the same straight line may be spaced variable amounts for boxes of different sizes, it is apparent that provision must be made for scoring variable distances. To accomplish this in a simple manner and to provide for a quick and easy adjustment, each head 22 and 23 is equipped with a flexible scoring member. The flexible scoring member 32 which at one end may be secured to the movable slotting knife 28, extends through an undercut groove 33 in head 22 and the excess length of said scoring member extends into a suitable pocket 34 within the head 22. Similarly the flexible scoring member 35 associated with head 23 is adj ustably mounted in an undercut slot 36 in the head 23, the excess length of said flexible scoring member being stored in pocket 37 within said head. These flexible scoring members 32 and 35 may be provided with any suitable scoring surfaces such, for example, as shown at 38 in Figure 4.

The slotting knives 26 and 28 and the scoring members may be secured in the heads by removable disks 39 which normally are secured to the heads by any suitable means such as bolts 40. While the scoring members occupy the undercut grooves in the heads, the slotting knives preferably are secured in an annular groove 41 in the disk 'adially inwardly from undercut grooves. In view of the fact that the flexible scoring members curve inwardly, as shown at 42, some supplemental scoring means must be provided in head 22 from the point where the flexible scoring member 32 curves inwardly to the end 29 of the slotting knife 26 and similarly some supplemental scoring means must be provided from the point where the flexible scoring member 35 curves inwardly to the end 43 of slot 27. Such scoring means takes the form of stationary plates 44 mounted in said heads 22 and 23, respectively.

By means of this arrangement a corrugated boxboard blank may be accurately slotted and scored in a single operation. By treatment between the members 22 and 23, the blank is provided with slots 21 and scores 20 extending along the same straight lines connecting said slots. The length of the scoring between the associated slots 21 may be quickly varied in accordance with requirements, by merely loosening the clamping disks, adjusting the scoring members 32 and 35 and movable knife 28 and again socuring the clamp disks in position. Accordingly, a minimum number of parts require adjustment and aminimum amount of time is required for making the adjustment, and the accuracy of such adjustment is assured.

In Figure 6 there is shown a pair of co operating scoring members by means of which scores may be made in offset relation with respect to each other as shown, for example, in the diagram of a. blank in Figure 9. In said diagram it will be noted that the scores 45 are along the same straight line and the scores 46 are along another straight line, said scores 45 and 46 being offset with respect to each other. It is appreciated that box blanks have been scored in this manner LFA before but bymeans which are entirely ditterent from that whic'lrI employ.

Referring particularlyto EF-i-gu're 6 it will be noted that two cooperating scoring heads 47 and 48 are provided in which a plurality of adjustable scoring members are 'inonnted. In this particular instance there are four flexible and--adjustable scoringanembers A 9, 50, 51. and 52 in eachhea'dAT and 48. *In adjusting the scoring members in each "head the same should be done from a "central point. In this connection it will "be noted that the distance between the -i1r\ vardly curved portions of eaclrof the*scoringmemhers -50 and '51 is spanned "by stationary scoring members and 54 which are offi set with respect'to each other-to make the adjacent-portionso't the ottset scores and A 6 between-the points '55-and 56, as-shown in Figure 9. The "balance of the associated score lfiis-made by the; scoring mem-b'ers50 and the balance of the associated score is 1nade*bythe scoring members 51. The right han'd score as in Figure 9 is made by scoringmembers 52. and the lett handscore 46 in Figure 9gis madeby scoring-members 49.. The excess length of the scoring members and '51-in each case is received in associated pockets 5T and '58 in said scoring heads. I

It is apparent, therefore, that by use of the scoring mechanism shown in Figure 6, box blanks-may be scored "along lines w-hrch are offset with respect to each other in a simple, eflicient and accurate? manner and in amanner to meet all-of therequirements for successful commercial use.

As shown in Figure 9 the box blank is provided with longitudinal scores offset on each alternate panel for the purpose of permit-ting one pair of flaps on top andbottom of the box to fold inside the outer flaps to prevent strain at the corners.

It is my intention to cover all modifications of the invention falling within the spirit and scope of the following claims.

I claim:

1. In a device for slotting and scoring box-board and the like, a plurality of cooperating members having complementary portions whereby slotting and scoring of the material may be done in a single operation, and supports for said members, the scoring members being flexible for curving same into said supports for storage of the excessive length thereof.

2. In a device for slotting and scoring boxboard and the like, a plurality of cooperating members having complementary portions whereby slotting and scoring of the material may be done in a single operation, one of said members including an adjustable knife for slotting purposes and a flexible scoring member associated therewith.

In a device for slotting and scoring box-board and the like, a plurality of co- -=oper ating membershaving complementary {portions whereby slotting and scoring of the material may be done in a single-opera- ;tion, one-0f said members, including an adjustable knife for slot-ting purposes, a scor- --ing-membe-r associated therewith, and means whereby the eli'ective lengthot said scoring *member may be varied.

4. In a device for slotting and scoring box-board and the like, a plurality of co-' operating members having complemen-tary port-ions whereby slotting and scoring otthe material may bedone in a single operation,

one of said members including a relatively -tixed and a relatively adjustable knife i -or slottingpurposes, and an adjustable scoring member interposed thercbetween whereby the length "of the scoring and the distance between the slots are varied.

'5. In a device for slotting and scoring box+board and the like, a plurality of cooperating members tor slotting and scoring of material in a single operation, one otsa' d members including a knife and the 'other member having a igroove for the reception otsaid knite'for slotting purposes, and

6. In a device for slotting and scoring box-board and the like, a plurality of cooperating members for "slotting and "scoring unaterial in a single'operatioinone (it said members including a plurality of knives and the other a plurality of cooperating grooves by means of which the material may be slotted, and both of said members having flexible cooperating scoring members whereby said material may be scored between the slots.

7. In a device for slotting and scoring box-board and the like, a head, a slotting member in said head, and a scoring member carried by said head whereby material may be slotted and scored in a single operation, the scoring member being flexible tor curving same into said head for storage of the excess length thereof.

8. In a device for slotting and scoring box-board and the like, a supporting head, a plurality of slotting members mounted in said head, and a flexible scoring member interposed between said slotting members whereby material may be provided with a plurality of slotted portions and a scored portion therebetween.

9. In a device for slotting and scoring box-board and the like, a supporting head, a plurality of relatively adjustable slotting members mounted in said head, and a scoring member adjustable within said head and interposed between said slotting members whereby material may be slotted and scored in a single operation, said scoring of the material being thereby variable in length.

10. In a device for slotting and scoring box-board and the like, a supporting head, a relatively stationary knife carried by said head, a movable knife adjustably mounted in said head, and a flexible scoring member between said knives whereby a blank may be slotted and scored in a single operation and the distance between the slotted portions varied.

11. In a device for slotting and scoring box-board and the like, a supporting head, a slotting member carried by said head, and a flexible scoring member associated with said slotting member and adjustably mounted in said head whereby a blank may be slotted and scored, the length of the score being variable.

12. In a device of the class described, a supporting head having a pocket therein, and a flexible scoring member carried by said head, one end portion of said flexible scoring member being received by said pocket.

13. In a device of the class described, a supporting head having a pocket, a flexible scoring member adjustably carried by said head, said pocket receiving excess length of the scoring member, and a relatively stationary scoring member for carrying a score directly to a slotted portion to coinpensate for the curved part of the scoring member passed into said pocket.

14. In a device of the class described, a supporting head having a pocket, a slotting knife carried by said head, a flexible scoring member carried by said head which curves into said pocket, and a relatively stationary scoring member mterposed between one end of said slotting knife and aportion of said flexible scoring member for the purpose of carrying the scoring to the slot made by said slotting knife.

15. A slotting and scoring head having an opening in the periphery thereof, a slotting blade movable circumferentially toward and from said opening, and a scoring member secured to said blade and extending along said periphery and movable into and out of said opening.

16. A combined slotting and scoring head having an opening in the periphery thereof, a slotting blade movable circumferentially of said head toward and from said opening, and a scoring member extending from said blade to said opening and movable along said periphery and through said opening.

17. A combined slotting and scoring head having an opening in the periphery there-' of, a relatively stationary scoring member at one side of said opening, a slotting blade at the other side of said opening and movable circumferentially of the head toward and from said opening, and a scoring member between said blade and said opening and movableback and forth through said opening.

Signed at Chicago, day of April, 1923.

NATHANIEL L. HURD.

' Illinois, this 19th 

